1 . Their main weapons are clubs and poison-tipped arrows, used ________both hunting and protecting their territory against outsiders. （用适当的词填空）

2 . Paul likes surfing the Internet, and he is always searching the Web _______interesting sites. (用适当的词填空)

3 . People celebrate harvest festivals because food is gathered ______ the winter. (用适当的词填空)

4 . Seeing the colorful toys, the baby stopped crying, smiling and reaching out ________ them. (用适当的词填空)

5 . 您的美术馆将要举办中国画展，所以我写信申请成为该画展的志愿者。
A Chinese Painting Exhibition _________________, so I’m writing to _________________.

6 . He has decided to apply ________ a part-time job during the summer vacation.(用适当的词填空)

8 . 中国已经在这些沿线地区的运输系统和服务上投入了数十亿美元，这将促进整个地区实现大发展，有利于未来的贸易和文化交流。
China has invested billions in systems and services along these routes, which will help to greatly develop the whole area ______ ______ ______ ______ future trade and cultural exchange.

10 . It is important for you to make a plan _____your future. (用适当的词填空)